Based on the spatial integral and approaching method

the slice collimator is proposed for SPECT imaging. It has the advantages of high sensitivity and fast scanning over the conventional SPECT. Rotation of the gamma camera is not necessary

thus resulting in the reduction of the patient motion artifact and the improvement of image quality. The ideal 2-D simulation data were generated without considering scattering and noise. A checking computation was carried out with the relaxation solution method of the linear equations set. Results show that the activity distribution regions can be approached gradually

and the distribution pattern can be distinguished by using this method.